CN106866275A - A kind of granular compound fertilizer for exempting to dry and cool down and preparation method thereof - Google Patents
A kind of granular compound fertilizer for exempting to dry and cool down and preparation method thereof Download PDFInfo
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- CN106866275A CN106866275A CN201710197224.XA CN201710197224A CN106866275A CN 106866275 A CN106866275 A CN 106866275A CN 201710197224 A CN201710197224 A CN 201710197224A CN 106866275 A CN106866275 A CN 106866275A
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- compound fertilizer
- particle
- granular compound
- dry
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05C—NITROGENOUS FERTILISERS
- C05C9/00—Fertilisers containing urea or urea compounds
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05B—PHOSPHATIC FERTILISERS
- C05B7/00—Fertilisers based essentially on alkali or ammonium orthophosphates
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05C—NITROGENOUS FERTILISERS
- C05C3/00—Fertilisers containing other salts of ammonia or ammonia itself, e.g. gas liquor
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G3/00—Mixtures of one or more fertilisers with additives not having a specially fertilising activity
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G5/00—Fertilisers characterised by their form
- C05G5/10—Solid or semi-solid fertilisers, e.g. powders
- C05G5/12—Granules or flakes
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Pest Control & Pesticides (AREA)
- Fertilizers (AREA)
Abstract
The invention discloses a kind of granular compound fertilizer exempted from and dry and cool down and preparation method thereof, it is related to technical field of agricultural fertilizers.The granular compound fertilizer is made up of the raw material of following mass percents：Corruption organic material 30~50%, inorganic material 25~45%, auxiliary agent 10~30%.The method of the invention is to produce granular compound fertilizer finished product by matching raw material, comminution pretreatment, weighing, stirring, granulation, screening, packaging.The present invention can reduce traditional drying and cooling link, process is simple, easy to operate, and equipment investment is greatly reduced, and saved mass energy consumption, reduced environmental pollution, realize production energy-saving and green manufacturing.Meanwhile, present invention also adds the active ingredient of product, edaphic condition is can obviously improve, improve crop yield and quality.
Description
Technical field
The present invention relates to agricultural fertilizer field, be more specifically related to a kind of granular compound fertilizer for exempting to dry and cool down and its
Preparation method.
Background technology
At present, in traditional graininess organic fertilizer, organic-inorganic composite fertilizer, the production process of mineral mixed fertilizer, all need
Add water or binding agent granulated, after granulation contain moisture higher, therefore all have to pass through drying and cooling two it is important
Operation, not only has complex process, and apparatus input is high, and a large amount of electric power and coal are also consumed in drying course, makes
Into environmental pollution, manpower is increased, cause product cost to remain high, while product quality can also reduced, nutrient loss etc.
Problem.
The content of the invention
The purpose of the present invention be just directed to the weak point in the presence of above-mentioned prior art and provide one kind exempt from drying and
Granular compound fertilizer of cooling and preparation method thereof.The present invention can reduce traditional drying and cooling link, process is simple, behaviour
Facilitate, without complex device, saved mass energy consumption, reduced environmental pollution, realize production energy-saving and green
Manufacture.Meanwhile, present invention also adds the active ingredient of product, edaphic condition is can obviously improve, improve crop yield and product
Matter.
The purpose of the present invention can be realized by following technique measures：
The granular compound fertilizer for exempting to dry and cool down of the invention is made up of the raw material of following mass percents：Corruption organic material
30~50%, inorganic material 25~45%, auxiliary agent 10~30%.
Heretofore described corruption organic material takes from the furfural dregs after becoming thoroughly decomposed, Chinese medicine dreg, edible fungi residues, vinasse, agriculture
One kind, two or more any combination in crop material or feces of livestock and poultry.
Heretofore described inorganic material take from one kind in the mineral fertilizer of nitrogenous or phosphorus or potassium, two or more
Any combination.
Heretofore described auxiliary agent take from the concentrated sulfuric acid, bentonite, diatomite, calcium magnesium phosphate, activated carbon, magnesium sulfate monohydrate or
One kind, two or more any combination in half-H 2 O calcium sulphate.
Heretofore described method is realized by following step：
（a）Apolegamy raw material：Corruption organic material, inorganic material and the class raw material of auxiliary agent three are matched respectively.
（b）Comminution pretreatment：By step（a）The middle three class raw materials matched each carry out comminution pretreatment, respectively obtain
Corresponding corruption organic material particle, inorganic material particle and builder granule.
（c）Weigh, stir：By step（b）Corruption organic material particle, inorganic material particle and auxiliary agent after middle comminution pretreatment
Particle is weighed according to proportioning and is stirred mixing, obtains a homogeneous mixture material.
（d）Granulation：By step（c）The homogeneous mixture of material of middle gained is poured into comminutor and granulated, and obtains composite fertilizer
Particle.
（e）Screening：By step（d）The compound fertilizer granules of middle gained pour into vibration screen and are screened, and finally filter out conjunction
Lattice compound fertilizer granules.
（f）Packaging：By step（e）The qualified compound fertilizer granules of middle gained are packed, sealed, that is, obtain graininess and be combined
Fertile finished product.
Heretofore described step（b）In carry out the corruption organic material particle, the inorganic material particle that are obtained after comminution pretreatment
It is 70~110 mesh with the granularity of builder granule.
Heretofore described step（e）In the particle diameter of qualified compound fertilizer granules that filters out be 2~6mm.
Principle of the invention is as follows：
Exempting from the present invention is dried and the granular compound fertilizer that cools down is by corruption organic material, inorganic material and the class raw material group of auxiliary agent three
Into.Wherein, as the feedstock candidate of auxiliary agent, can by any one or two kinds of in following three kinds of approach or three kinds of combination,
The moisture that fertilizer is added in granulation is removed from material system in a different manner, free in composite fertilizer to be greatly reduced
Water content, thus follow-up baking operation can be exempted.Approach one：Selection of auxiliary porous material, such as bentonite, diatomite,
Calcium magnesium phosphate, activated carbon, such porous material can be with the free waters in sticking material；Approach two：Selection of auxiliary is met water and can be produced
The material of raw exothermic reaction, such as concentrated sulfuric acid, the concentrated sulfuric acid can make the free water evaporation in material；Approach three：The crystallization water is unsaturated
Material, such as magnesium sulfate monohydrate, half-H 2 O calcium sulphate, magnesium sulfate monohydrate or half-H 2 O calcium sulphate can be anti-with the free water in material
The crystallization water should be formed.
Technique effect of the invention is as follows：
The present invention can reduce traditional drying and cooling link, process is simple, easy to operate, without complex device, save
Mass energy consumption, environmental pollution is reduced, realize production energy-saving and green manufacturing.Meanwhile, present invention also adds product
The active ingredient of product, can obviously improve edaphic condition, improve crop yield and quality.
Brief description of the drawings
Fig. 1 is process chart of the invention.
Specific embodiment
The present invention is described in further detail with reference to embodiments.
The step in each of the embodiments described below（b）In carry out the corruption organic material particle, the nothing that are obtained after comminution pretreatment
The granularity of machine material particle and builder granule is 70~110 mesh；The particle diameter of the qualified compound fertilizer granules is 2~6mm.Below
Repeat no more.
Embodiment 1
（a）Apolegamy raw material：Apolegamy corruption organic material：480 grams of furfural dregs after becoming thoroughly decomposed；Apolegamy inorganic material：300 grams of urea；Apolegamy
Auxiliary agent：220 grams of activated carbon.
（b）Comminution pretreatment：By step（a）The middle furfural dregs comminution pretreatment as corruption organic material matched, obtains
To furfural solid impurity particle（That is corruption organic material particle）；The urea as inorganic material that will have been matched carries out comminution pretreatment, obtains
Urea granules（That is inorganic material particle）；The activated carbon as auxiliary agent that will have been matched carries out comminution pretreatment, obtains activated carbon
Particle（That is builder granule）.
（c）Weigh, stir：By step（b）Corruption organic material particle, inorganic material particle and auxiliary agent after middle comminution pretreatment
Particle is weighed according to proportioning and is stirred mixing, obtains a homogeneous mixture material.
（d）Granulation：By step（c）The homogeneous mixture of material of middle gained is poured into comminutor and granulated, and obtains composite fertilizer
Particle.
（e）Screening：By step（d）The compound fertilizer granules of middle gained pour into vibration screen and are screened, and finally filter out conjunction
Lattice compound fertilizer granules.
（f）Packaging：By step（e）The qualified compound fertilizer granules of middle gained are packed, sealed, that is, obtain graininess and be combined
Fertile finished product.
Embodiment 2
（a）Apolegamy raw material：Apolegamy corruption organic material：400 grams of vinasse after becoming thoroughly decomposed；Apolegamy inorganic material：350 grams of MAP；Choosing
With auxiliary agent：250 grams of magnesium sulfate monohydrate.
（b）Comminution pretreatment：By step（a）The middle vinasse comminution pretreatment as corruption organic material matched, obtains
Vinasse particle（That is corruption organic material particle）；The MAP as inorganic material that will have been matched carries out comminution pretreatment, obtains
Monoammonium phosphate particle（That is inorganic material particle）；The magnesium sulfate monohydrate as auxiliary agent that will have been matched carries out comminution pretreatment, obtains
To sulfuric acid monohydrate magnesium granules（That is builder granule）.
（c）Weigh, stir：By step（b）Corruption organic material particle, inorganic material particle and auxiliary agent after middle comminution pretreatment
Particle is weighed according to proportioning and is stirred mixing, obtains a homogeneous mixture material.
（d）Granulation：By step（c）The homogeneous mixture of material of middle gained is poured into comminutor and granulated, and obtains composite fertilizer
Particle.
（e）Screening：By step（d）The compound fertilizer granules of middle gained pour into vibration screen and are screened, and finally filter out conjunction
Lattice compound fertilizer granules.
（f）Packaging：By step（e）The qualified compound fertilizer granules of middle gained are packed, sealed, that is, obtain graininess and be combined
Fertile finished product.
Embodiment 3
（a）Apolegamy raw material：Apolegamy corruption organic material：220 grams of furfural dregs after becoming thoroughly decomposed and 260 grams of Chinese medicine dreg after becoming thoroughly decomposed；Choosing
With inorganic material：200 grams of urea 100 and ammonium sulfate；Apolegamy auxiliary agent：120 grams of 100 grams of activated carbon and semi-hydrated gypsum.
（b）Comminution pretreatment：By step（a）The middle furfural dregs and Chinese medicine dreg as corruption organic material matched are crushed
Pretreatment, obtains furfural solid impurity particle and Chinese medicine dreg particle, and corruption organic material particle is constituted after mixing；To match as without
The urea and ammonium sulfate of machine material carry out comminution pretreatment, obtain urea granules, ammonium sulfate, and inorganic material is constituted after mixing
Grain；The activated carbon and semi-hydrated gypsum as auxiliary agent that will have been matched carry out comminution pretreatment, obtain activated carbon granule, semi-hydrated gypsum
Particle, constitutes builder granule after mixing.
（c）Weigh, stir：By step（b）Middle comminution pretreatment and mixed corruption organic material particle, inorganic material
Grain and builder granule are weighed according to proportioning and are stirred mixing, obtain a homogeneous mixture material.
（d）Granulation：By step（c）The homogeneous mixture of material of middle gained is poured into comminutor and granulated, and obtains composite fertilizer
Particle.
（e）Screening：By step（d）The compound fertilizer granules of middle gained pour into vibration screen and are screened, and finally filter out conjunction
Lattice compound fertilizer granules.
（f）Packaging：By step（e）The qualified compound fertilizer granules of middle gained are packed, sealed, that is, obtain graininess and be combined
Fertile finished product.
Embodiment 4
（a）Apolegamy raw material：Apolegamy corruption organic material：160 grams of vinasse after becoming thoroughly decomposed and 240 grams of edible fungi residues after becoming thoroughly decomposed；Apolegamy
Inorganic material：150 grams of MAP 200 and Diammonium phosphate (DAP)；Apolegamy auxiliary agent：100 grams of 150 grams of magnesium sulfate monohydrate and bentonite.
（b）Comminution pretreatment：By step（a）The middle vinasse and edible fungi residues as corruption organic material matched crush pre-
Treatment, obtains vinasse particle and edible fungi residues particle, and corruption organic material particle is constituted after mixing；To match as inorganic material
MAP and Diammonium phosphate (DAP) carry out comminution pretreatment, obtain monoammonium phosphate particle, Diammonium phosphate (DAP) particle, nothing is constituted after mixing
Machine material particle；The magnesium sulfate monohydrate and bentonite as auxiliary agent that will have been matched carry out comminution pretreatment, obtain diatomite particle,
Half-H 2 O calcium sulphate particle, constitutes builder granule after mixing.
（c）Weigh, stir：By step（b）Middle comminution pretreatment and mixed corruption organic material particle, inorganic material
Grain and builder granule are weighed according to proportioning and are stirred mixing, obtain a homogeneous mixture material.
（d）Granulation：By step（c）The homogeneous mixture of material of middle gained is poured into comminutor and granulated, and obtains composite fertilizer
Particle.
（e）Screening：By step（d）The compound fertilizer granules of middle gained pour into vibration screen and are screened, and finally filter out conjunction
Lattice compound fertilizer granules.
（f）Packaging：By step（e）The qualified compound fertilizer granules of middle gained are packed, sealed, that is, obtain graininess and be combined
Fertile finished product.
Embodiment 5
（a）Apolegamy raw material：Apolegamy corruption organic material：140 grams of agricultural crop straw after becoming thoroughly decomposed and the feces of livestock and poultry 180 after becoming thoroughly decomposed
Gram；Apolegamy inorganic material：130 grams of 80 grams of MAP, 120 grams of Diammonium phosphate (DAP), 70 grams of potassium sulfate and potassium chloride；Apolegamy auxiliary agent：Silicon
150 grams of 130 grams of diatomaceous earth and half-H 2 O calcium sulphate.
（b）Comminution pretreatment：By step（a）The middle agricultural crop straw and feces of livestock and poultry as corruption organic material matched
Comminution pretreatment, obtains agricultural crop straw particle and feces of livestock and poultry particle, and corruption organic material particle is constituted after mixing；To match
The MAP as inorganic material, Diammonium phosphate (DAP), potassium sulfate and potassium chloride carry out comminution pretreatment, obtain MAP
Grain, Diammonium phosphate (DAP) particle, granular potassium sulfate, potassium chloride particle, constitute inorganic material particle after mixing；To match as auxiliary agent
Diatomite, half-H 2 O calcium sulphate carry out comminution pretreatment, obtain diatomite particle, half-H 2 O calcium sulphate particle, after mixing constitute help
Agent particle.
（c）Weigh, stir：By step（b）Middle comminution pretreatment and mixed corruption organic material particle, inorganic material
Grain and builder granule are weighed according to proportioning and are stirred mixing, obtain a homogeneous mixture material.
（d）Granulation：By step（c）The homogeneous mixture of material of middle gained is poured into comminutor and granulated, and obtains composite fertilizer
Particle.
（e）Screening：By step（d）The compound fertilizer granules of middle gained pour into vibration screen and are screened, and finally filter out conjunction
Lattice compound fertilizer granules.
（f）Packaging：By step（e）The qualified compound fertilizer granules of middle gained are packed, sealed, that is, obtain graininess and be combined
Fertile finished product.
Embodiment 6
（a）Apolegamy raw material：Apolegamy corruption organic material：80 grams of Chinese medicine dreg after becoming thoroughly decomposed, become thoroughly decomposed after 100 grams of furfural dregs, become thoroughly decomposed
Rear 60 grams of agricultural crop straw, become thoroughly decomposed after 120 grams of feces of livestock and poultry；Apolegamy inorganic material：100 grams of MAP, Diammonium phosphate (DAP) 80
Gram, 60 grams of potassium sulfate, 140 grams of potassium chloride；Apolegamy auxiliary agent：100 grams of diatomite and 110 grams of half-H 2 O calcium sulphate, 50 grams of the concentrated sulfuric acid（This
Sulfuric acid of the selected concentrated sulfuric acid in place for mass fraction more than or equal to 90%）.
（b）Comminution pretreatment：By step（a）The middle Chinese medicine dreg as corruption organic material, furfural dregs, the farming matched
Thing stalk, feces of livestock and poultry comminution pretreatment, obtain Chinese medicine dreg particle, furfural solid impurity particle, agricultural crop straw particle and animal dung
Just particle corruption organic material particle, constitutes corruption organic material particle after mixing；The MAP as inorganic material that to match,
Diammonium phosphate (DAP), potassium sulfate, potassium chloride carry out comminution pretreatment, obtain monoammonium phosphate particle, Diammonium phosphate (DAP) particle, potassium sulfate
Grain, potassium chloride particle, constitute inorganic material particle after mixing；The diatomite as auxiliary agent that to match, half-H 2 O calcium sulphate are carried out
Comminution pretreatment（Sulfuric acid is liquid without treatment）, diatomite particle, half-H 2 O calcium sulphate particle are obtained, constituted after mixing and helped
Agent particle.
（c）Weigh, stir：By step（b）Middle comminution pretreatment and mixed corruption organic material particle, inorganic material
Grain, builder granule and sulfuric acid are weighed according to proportioning and are stirred mixing, obtain a homogeneous mixture material.
（d）Granulation：By step（c）The homogeneous mixture of material of middle gained is poured into comminutor and granulated, and obtains composite fertilizer
Particle.
（e）Screening：By step（d）The compound fertilizer granules of middle gained pour into vibration screen and are screened, and finally filter out conjunction
Lattice compound fertilizer granules.
（f）Packaging：By step（e）The qualified compound fertilizer granules of middle gained are packed, sealed, that is, obtain graininess and be combined
Fertile finished product.
Claims (7)
1. a kind of granular compound fertilizer for exempting to dry and cool down, it is characterised in that：The granular compound fertilizer is by following quality
The raw material composition of percentage：Corruption organic material 30~50%, inorganic material 25~45%, auxiliary agent 10~30%.
2. the granular compound fertilizer for exempting to dry and cool down according to claim 1, it is characterised in that：The corruption organic material
Take from the furfural dregs after becoming thoroughly decomposed, Chinese medicine dreg, edible fungi residues, vinasse, agricultural crop straw or feces of livestock and poultry it is a kind of, two kinds
Or two or more any combination.
3. the granular compound fertilizer for exempting to dry and cool down according to claim 1, it is characterised in that：The inorganic material is taken from
One kind, two or more any combination in the mineral fertilizer of nitrogenous or phosphorus or potassium.
4. the granular compound fertilizer for exempting to dry and cool down according to claim 1, it is characterised in that：The auxiliary agent is taken from dense
One kind in sulfuric acid, bentonite, diatomite, calcium magnesium phosphate, activated carbon, magnesium sulfate monohydrate or half-H 2 O calcium sulphate, two kinds or two kinds
Any combination above.
5. a kind of method for preparing the granular compound fertilizer for exempting to dry and cool down described in claim 1, it is characterised in that：Institute
Method is stated by following step to realize：
（a）Apolegamy raw material：The raw material of corruption organic material, inorganic material and auxiliary agent each needed for correspondence is matched respectively；
（b）Comminution pretreatment：By step（a）Middle corruption organic material, inorganic material and the auxiliary agent for having matched raw material is each crushed
Pretreatment, respectively obtains corresponding corruption organic material particle, inorganic material particle and builder granule；
（c）Weigh, stir：By step（b）Corruption organic material particle, inorganic material particle and builder granule after middle comminution pretreatment
Mixing is weighed and stirred according to proportioning, is obtained a homogeneous mixture material；
（d）Granulation：By step（c）The homogeneous mixture of material of middle gained is poured into comminutor and granulated, and obtains compound fertilizer granules；
（e）Screening：By step（d）The compound fertilizer granules of middle gained pour into vibration screen and are screened, and finally filter out qualified multiple
Hefei particle；
（f）Packaging：By step（e）The qualified compound fertilizer granules of middle gained are packed, sealed, that is, obtain granular compound fertilizer into
Product.
6. according to claim 5 for preparing the method for granular compound fertilizer for exempting to dry and cool down, it is characterised in that：
The step（b）In carry out the granularity of corruption organic material particle, inorganic material particle and builder granule that is obtained after comminution pretreatment
It is 70~110 mesh.
7. according to claim 5 for preparing the method for granular compound fertilizer for exempting to dry and cool down, it is characterised in that：
The step（e）In the particle diameter of qualified compound fertilizer granules that filters out be 2~6mm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710197224.XA CN106866275A (en) | 2017-03-29 | 2017-03-29 | A kind of granular compound fertilizer for exempting to dry and cool down and preparation method thereof |
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| CN201710197224.XA CN106866275A (en) | 2017-03-29 | 2017-03-29 | A kind of granular compound fertilizer for exempting to dry and cool down and preparation method thereof |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111499463A (en) * | 2020-06-10 | 2020-08-07 | 黑龙江实力农业肥料科技有限公司 | Preparation method of drying-free fertilizer |
| CN111635280A (en) * | 2020-06-10 | 2020-09-08 | 黑龙江实力农业肥料科技有限公司 | Drying-free fertilizer and manufacturing method thereof |
| CN111646858A (en) * | 2020-06-10 | 2020-09-11 | 黑龙江实力农业肥料科技有限公司 | Drying-free granulation method for wrapping organic-inorganic compound fertilizer |
| CN112824356A (en) * | 2019-11-21 | 2021-05-21 | 湖南启农生物科技有限公司 | Organic fertilizer added with capsaicin and preparation method thereof |
| CN112824357A (en) * | 2019-11-21 | 2021-05-21 | 湖南启农生物科技有限公司 | Biochar organic fertilizer and preparation method thereof |
| CN112824355A (en) * | 2019-11-20 | 2021-05-21 | 湖南启农生物科技有限公司 | Organic fertilizer, biological fertilizer drying-free element, preparation method and application |
| CN112830826A (en) * | 2019-11-22 | 2021-05-25 | 湖南启农生物科技有限公司 | Camellia oleifera shell organic fertilizer and preparation method thereof |
| CN112939658A (en) * | 2019-11-22 | 2021-06-11 | 湖南启农生物科技有限公司 | Drying-free organic fertilizer and preparation method thereof |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112824355A (en) * | 2019-11-20 | 2021-05-21 | 湖南启农生物科技有限公司 | Organic fertilizer, biological fertilizer drying-free element, preparation method and application |
| CN112824356A (en) * | 2019-11-21 | 2021-05-21 | 湖南启农生物科技有限公司 | Organic fertilizer added with capsaicin and preparation method thereof |
| CN112824357A (en) * | 2019-11-21 | 2021-05-21 | 湖南启农生物科技有限公司 | Biochar organic fertilizer and preparation method thereof |
| CN112830826A (en) * | 2019-11-22 | 2021-05-25 | 湖南启农生物科技有限公司 | Camellia oleifera shell organic fertilizer and preparation method thereof |
| CN112939658A (en) * | 2019-11-22 | 2021-06-11 | 湖南启农生物科技有限公司 | Drying-free organic fertilizer and preparation method thereof |
| CN111499463A (en) * | 2020-06-10 | 2020-08-07 | 黑龙江实力农业肥料科技有限公司 | Preparation method of drying-free fertilizer |
| CN111635280A (en) * | 2020-06-10 | 2020-09-08 | 黑龙江实力农业肥料科技有限公司 | Drying-free fertilizer and manufacturing method thereof |
| CN111646858A (en) * | 2020-06-10 | 2020-09-11 | 黑龙江实力农业肥料科技有限公司 | Drying-free granulation method for wrapping organic-inorganic compound fertilizer |
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